1. Soak rajma and chana dal in water for 6-8 hours.
2.Put 1 tbsp oil in cooker and heat it for some time.
3.Put 1 tbsp onion.
4.Saute onion till pink.
5.Add rajma and chana dal.
6.Saute for 1 minute.
7.Add water upto the level of rajma and chana. Add some salt.
8. Cook for 10-15 mins on low flame.
9. Let cooker cool for 5 mins. Then open it.If water is still left inside, cook on high flame to till all the water is evaporated.
10. Take the cooked mixture out of the cooker and put it in a bowl.
11. Leave it to cool.
12. Now add rest of onion, green chillies, ginger, coriander, roasted jeera powder, red chilli powder and black salt.
13. Mix well.
14.Divide the mixtures into several parts and form them into spheres.Flatten the opposite side of this sphere.
15. Add some oil in a pan.
16. Put the mixture and cook on low flame till crisp.
17. Serve with green coriander chutney.